code: def test_clas_cv_metrics(classifier_explainer_with_cv):
      assert isinstance(classifier_explainer_with_cv.metrics(), dict)
      assert isinstance(
          classifier_explainer_with_cv.metrics(pos_label=0), dict
      )
  
file_path: explainerdashboard/tests/test_cv.py
imports: import pytest
  import pandas
  from explainerdashboard.explainers import ClassifierExplainer, RegressionExplainer
  from explainerdashboard.datasets import titanic_survive, titanic_fare
label_desc: Use image node_id 4 for calling a global function with example usage: test_clas_cv_metrics(classifier_explainer_with_cv) without return types